systematisation, systematization, rationalisation, rationalization - systematic organization; the act of organizing something according to a system or a rationale

written communication, written language - communication by means of written symbols

Bushido - traditional code of the Japanese samurai which stressed courage and loyalty and self-discipline and simple living

legal code - a code of laws adopted by a state or nation; "a code of laws"

building code - set of standards established and enforced by local government for the structural safety of buildings

dress code - a set of rules specifying the correct manner of dress while on the premises of the institution (or specifying what manner of dress is prohibited)

fire code - set of standards established and enforced by government for fire prevention and safety in case of fire as in fire escapes etc

omerta - a code of silence practiced by the Mafia; a refusal to give evidence to the police about criminal activities

health code, sanitary code - set of standards established and enforced by government for health requirements as in plumbing etc

Highway Code - the code of rules governing the use of public roads